fisk/core/lib/billing.py

112 lines
3.3 KiB
Python

import stripe
from django.conf import settings
from lago_python_client import Client
from lago_python_client.exceptions import LagoApiError
from lago_python_client.models import Customer, CustomerBillingConfiguration
client = Client(api_key=settings.LAGO_API_KEY, api_url=settings.LAGO_URL)
def expand_name(first_name, last_name):
"""
Convert two name variables into one.
Last name without a first name is ignored.
:param first_name: The first name
:param last_name: The last name
:return: A string with the first and last name, or None if both are None
"""
name = None
if first_name:
name = first_name
# We only want to put the last name if we have a first name
if last_name:
name += f" {last_name}"
return name
def get_or_create(email, first_name, last_name):
"""
Get a customer ID from Stripe if one with the given email exists.
Create a customer if one does not.
Raise an exception if two or more customers matching the given email exist.
:param email: The email address of the customer
:param first_name: The first name of the customer
:param last_name: The last name of the customer
:return: The customer ID
"""
# Let's see if we're just missing the ID
matching_customers = stripe.Customer.list(email=email, limit=2)
if len(matching_customers) == 2:
# Something is horribly wrong
raise Exception(f"Two customers found for email {email}")
elif len(matching_customers) == 1:
# We found a customer. Let's copy the ID
customer = matching_customers["data"][0]
customer_id = customer["id"]
return customer_id
else:
# We didn't find anything. Create the customer
# Create a name, since we have 2 variables which could be null
name = expand_name(first_name, last_name)
cast = {"email": email}
if name:
cast["name"] = name
customer = stripe.Customer.create(**cast)
return customer.id
def update_customer_fields(user):
"""
Update the customer fields in Stripe.
"""
stripe.Customer.modify(user.stripe_id, email=user.email)
name = expand_name(user.first_name, user.last_name)
stripe.Customer.modify(user.stripe_id, name=name)
def create_or_update_customer(user):
"""
Create or update a customer in Lago.
"""
try:
customer = client.customers().find(str(user.customer_id))
except LagoApiError:
customer = None
if not customer:
customer = Customer(
external_id=str(user.customer_id),
name=f"{user.first_name} {user.last_name}",
)
customer.external_id = str(user.customer_id)
customer.email = user.email
customer.name = f"{user.first_name} {user.last_name}"
customer.billing_configuration = CustomerBillingConfiguration(
payment_provider="stripe",
provider_customer_id=str(user.stripe_id),
)
try:
created = client.customers().create(customer)
except LagoApiError as e:
print(e.response)
lago_id = created.lago_id
return lago_id
def delete_customer(user):
"""
Delete a customer from Lago.
:param user: User object to delete
"""
try:
client.customers().destroy(str(user.customer_id))
except LagoApiError:
pass